package ch8;

import java.util.Date;

public class Example8_20 {
    public static void main(String args[]) {
        try{
            Class cs = Class.forName("ch8.Rect");
            Rect rect = (Rect)cs.newInstance();
            rect.width = 100;
            rect.height = 200;
            System.out.println("rect的面积"+rect.getArea());
            cs = Class.forName("java.util.Date");
            Date date = (Date)cs.newInstance();
            System.out.println(String.format("%tF %<tT %<tA",date));
        }
        catch(Exception e){
            System.out.println(e.toString());
        }
    }
}
class Rect {
    double width,height,area;
    public double getArea() {
        area = height*width;
        return area;
    }
}


